Valve.



W. A. WARVIAN VALVE, APPLICATION FILED JUNE 5.1914.

l ,23 l ,82% Patented July 3, 1917.

2 SHEETS-SHEET I.

A TTUHNEY W. A. WARVIAN.

VALVE.

APPLICATION FILED JUNE 5, I914.

ATTORNEY unirse syraains PATENT @FFIQEO WILLIAM A. WARMAN, OF NEW YORK, N. Y., ASSIG-NOR TO KELLER MECHANICAL ENGRAVING- COMPANY, OF BROOKLYN, NEW

YORK.

VALVE.

Specification of Letters Patent.

Patented July 3, 1917.

Application led J'une 5, 1914. Serial No. 843,121.

To all whom t may concern.'

Be it known that I, WILLIAM A. WARMAN, a citizen of the United States, and a resident of New York, borough of Manhattan, in the county of New York and State of New York, have made and invented certain new and useful Iml'irovements in Valves, of which the following is a specification.

My invention relates to an improvement in valves, which, while capable of use for many and various purposes, has been more particularly designed for employment in connection with hot water service heaters. In large buildings, such, for instance, as hotels, apartment houses, public buildings, etc., an apparatus for the heating of water is frequently installed, wherein the water is caused to flow through or around tubes in a tank or reservoir to which steam is fed after being generated at some convenient place more or less remote from the tank. In such devices it is desirable, if not essential, that the ow of steam to the tank be automatically controlled in accordance withthe flow of water into and from said tank, and for this purpose I have designed the valve hereinafter described and claimed, the obj ect being to so construct and assemble the several parts thereof, that when operated by any approved type of thermostat to permit a flow of water therethrough, steam will also be permitted to flow through the valve, and when the flow of water is cut o, the flow of steam will also be simultaneously cut off.

With these and other ends in view, the invention Consists in certain novel features of construction and combinations of parts as will be hereinafter fully described and pointed out in the claims.

In the accompanying drawings, Figure 1 is a sectional view of a valve constructed in accordance with my invention.

Fig. 2 is a top plan view thereof, a portion of the same being broken away to show a section along the line 2-2 of- Fig. 1.

Fig. 3 is a view in elevation showing my improved valve connected up with a water heater and thermostatic device.

My improved valve primarily consists of two adjacent cylindrical chambers or compartments, one of which may be called or styled the steam side, and the other the water side, the valve controlling the flow of each being loeated between them. These chambers are formed in the casing 5, the

steam chamber being divided into an upper compartment 6, and a lower compartment 7, `by means of the partition wall 8 in which is formed an opening to provide communication between the chambers, and the surrounding wall of which opening forms a valve seat 9. On the water side of the valve is formed a chamber also divided into two compartments 10 and l1 by the partition wall 12 having an opening through the same to provide communication between the compartments, and also providing a valve seat 13, the steam and water chambers being separated by the wall 14, preferably formed integral with the casing 5. To the edge of the valve casing, and forming a part thereof, is tightly secured the top or cover 15, provided with an enlargement 16, and formed with a valve chamber 17 for containing the valve 1'8, from which latter extends the valve stem 19 through a chamber 20 formed in the partition wall 14.

In the wall 8 of the steam chamber is seated the valve 21, closing the communication between the compartments 6 and 7, the valve stem 22 extending up into an opening 23 formed in the cover 15, and which 0pening is closed by the plug 24.

On the stem 22, and in the steam compartment 6, is secured the piston 25 of such a diameter that steam, entering the chamber through the inlet pipe 26, will leak between the same and the wall of said chamber, so that when the valve 21 is seated or closed, the steam pressure on both sides of the piston will be equalized. When the valve 21, however, is raised or opened, steam, from any suitable source of supply, will flow through the inlet pipe 26 into the compartment 6, then through the opening in the partition wall 8 into the compartment 7, and out through the outlet pipe 27, to the tank or reservo-ir 27a, (Fig. 3) containing the water to be heated.

In the partition wall 12 of the water chamber is seated the valve 28, the stem 29 of which passes through a sleeve 30 extending into the compartment 10 of the water chamber and formed integral with'the cover raise the same, thereby raising the valve 18.

and affording, as before described, a comcover 15, and from this opening or chamber 31 also leads a port or duct 34 to the chamber 20 formed in the partition'wall 14, this communication of the duct 34 with said chamber 20 being opened or closed by means of the valve 18, the result being that the steam in the compartment 6, which leaks around the piston 25, Hows through the duct 33 into the chamber 31, and, as hereinafter explained, flowing around the valve the steam, as before described, to iiow from d the upper side of the piston 25 to the under side of the valve 21, when the valve 18 is p raised. Into the compartment 11 of the water chamber leads the water inlet pipe 37 from the tank 27a of heated water, and from the compartment 10 leads the water 'outlet pipe 38 to service outlets.

In operation, when the water is drawn from the tank or reservoir 27 a, the pressure in the outlet pipe 38 and compartment 10 being relieved, the water in the inlet pipe 37 and compartment 11, under pressure, will raise the valve 28, permitting the water to flow from the compartment 11 into the compartment 10 and out through the outlet pipe 38 to service outlets, the valve` stem 29 at the same time being raised until the circular groove 36 formed around the same registers with the port 34. By reason of the hot water being drawn from the tank 27?, the thermostatic device 19, Fig. 3 connected to the valve stem 19 will operate to munication between the steam chamber 6 on the upper side of the piston 25, through the duct 33, chamber 31,`ducL 34, chamber 20, 'duct 35, to the steam compartmentl 7 and under side or surface of the valve 21. The

pressure of the steam being thus relieved on the upper side of the piston 25, that on the lower side of the piston will tend to raise the same, and at the same time raise or open the valve 21, the area ofthe piston 25 being of course much greater than that of the valve 21, and thus permitting the steam to flow from the compartment 6 through the opening in the partition wall 8, into the compartment 7, and out through the outlet pipe 27 to the tank 27 a containing the water to be heated, the several parts remaining in these relativer positions until such time as the' water in said tank is heated to the proper degree, whereupon the thermostat 19a will operate to lower the valve stem v19 and the valve 18, thus shutting off communication between the steam compartments 6 and 7. When the parts assume this position, the steam leaking around the piston 25, will equalize 'the pressure on both sides of the latter, the valve 21 being thereby closed, and the flow of steam through the outlet pipe 27 to the tank or reservoir cut off.' p

From the foregoing it will be understood that when ywater is `caused to How through the water side of the valve by vreason of drawing of the hot water from the tank or reservoir through the service outlets, and the temperature ofthe water in said tank low-` ered by reason of the cold water flowing into thermostatic device, the steam side of the valve will be automatically opened and steam permitted to flow therethrough until, such time as the water in the tank or reservoir again becomes heated to the proper temperature and the thermostatic device operated to automatically close the valve 18. In other words, the valve permits the steam to iow through the same intothe tank while the water is owingthrough the valve, and the flow of steam through said valve cut off simultaneously with the cutting off of the iow of water through said valve.

In order to permit of the escape of any steam or waten which might find its way around the valve 4stem 29 into the opening or chamber 31, I provide a port 39 leading from the said chamber or opening 31 above the end of the valve stem 29, through the enlargement 16 of the cover 15, into the compartment 10, so that when the Valve stem 29 is raised, the steam or water in the com-- partment 3-1 may be forced through the duct of my invention, and as the same may be 'the water to be heated constitutes no part constructed in any desired way, or ofany suitable type, I have not illustrated the same in detail, nor is it necessary that such should be described; nor have I shown or described the th'ermostatic device to be connected with,

. and to operate, the valve stem 19 and valve, 118, as such device may also be of any approved form or type. In the'drawings, Fig. 3, I'have shown a thermostat comprising in part a bracket 40 secured rigidly to the hot water pipe 38, which, of course, expands and contracts in accordance with the temperature of the water therein, and to which bracket is secured the non-expansible rod 19a properly linked to the Valve stem 19, and the-same tol operate in the usual or ordinary manner, so that when the temperature of the water in the tank drops by reason of the outflow of hot water from the tank and inow. of cold water into the tank, the said thermostatic means will cause the valve to be opened, and

when the temperature of the waterin the tank is raised to the proper degree, said thermostatic means will operate to close said valve 18, the gist of my present invention lying in the construction of the valve itself and the relative arrangements of the several parts going to make up the same.

Vhat I claim is 1. A valve comprising a casing forming a steam chamber divided into two compartments and having a valve for opening and closing communication between said compartments, a Asteam pipe leading into one of said compartments and a steam pipe leading out of the other of said compartments, a

piston connected to and moving with said valve, a water chamber divided into two compartments and having a valve for opening and closing communicationbetwen said compartments, an inlet Water pipe leading into one of said compartments and a water pipe leading out of the other of said compartments, said casing being provided with a chamber between said steam and Water chambers and with ducts leading into and out of said latter chamber for affording communication between the two compartments of the steam chamber, a valve located in said ducts and adapted to be thermostatically operated for opening and closing said ducts,

the stem of said valve in said water chamber being also adapted to open and close said ducts.

2. A valve comprising a casing forming a steam chamber, a water chamber, and a central chamber between the same, said steam and water chamber-Seach having a valve located therein for dividing them into inlet and outlet compartments, the Valve in said steam chamber having a piston connected therewith to operate the same, a valve located in said central chamber for opening and closing a duct formed in said casing for affording communication between the two compartments of said steam chamber, the stem of the valve in said water chamber being provided with a groove around the same whereby to open said duct when the valve in said water chamber is opened and to close said duct when the valve is closed.

Signed at New York, borough of Manhattan, in the county of New York and State of New York, this third day of June, A. D. 1914.

WILLIAM A. WARMAN.

Witnesses:

ANNA V. WALSH, GEORGE E. Cook. 

